This is the 848th most frequent Persian word.
حساس
Sensitive.
In this sentence, 'حساس' describes someone's emotional sensitivity.
او فرد حساسی است.
He is a sensitive person.
Here, 'حساس' characterizes the delicacy of a topic or issue.
این موضوع بسیار حساس است.
This topic is very sensitive.
In this context, 'حساس' refers to a physical sensitivity or reaction to external factors.